import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

/* Layout */
import Layout from '@/layout'

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'             the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
export const constantRoutes = [
  {
    path: '/login',
    component: () => import('@/views/login/index'),
    hidden: true
  },

  {
    path: '/404',
    component: () => import('@/views/404'),
    hidden: true
  },

	{
		path: '/401',
		component: () => import('@/views/401'),
		hidden: true
	},

  {
    path: '/',
    component: Layout,
    redirect: '/dashboard',
    children: [{
      path: 'dashboard',
      name: 'Dashboard',
      component: () => import('@/views/dashboard/index'),
      meta: { title: '若兮后台管理系统', icon: 'dashboard' }
    }]
  },
	{
		path: '/chart',
		component: Layout,
		redirect: '/chart/visit',
		name: 'Example',
		meta: { title: '可视化图表控制台', icon: 'chart' },
		children: [
			{
				path: 'visit',
				name: 'visit',
				component: () => import('@/views/charts/visit-chart'),
				meta: { title: '来访可视化图表', icon: 'chart' }
			},
			{
				path: 'blog',
				name: 'blog',
				component: () => import('@/views/charts/blog-chart'),
				meta: { title: '在线博客可视化图表', icon: 'form' }
			}
		]
	},
	{
		path: '/personal',
		component: Layout,
		children: [
			{
				path: 'index',
				name: 'Form',
				component: () => import('@/views/personal/index'),
				meta: { title: '管理员个人信息', icon: 'user' }
			}
		]
	},
  {
    path: '/user',
    component: Layout,
    redirect: '/user/user',
    name: 'Example',
    meta: { title: '用户管理', icon: 'peoples' },
    children: [
      {
        path: 'table',
        name: 'Table',
        component: () => import('@/views/user/user'),
        meta: { title: '用户列表', icon: 'user' }
      },
      {
        path: 'black',
        name: 'black',
        component: () => import('@/views/user/blackuser'),
        meta: { title: '用户黑名单列表', icon: 'list' }
      }
    ]
  },
	{
		path: '/admin',
		component: Layout,
		redirect: '/admin/index',
		name: 'Example',
		meta: { title: '管理员管理', icon: 'example' },
		children: [
			{
				path: 'admin',
				name: 'admin',
				component: () => import('@/views/admin/index'),
				meta: { title: '管理员列表', icon: 'user' }
			},
			{
				path: 'role',
				name: 'role',
				component: () => import('@/views/admin/role'),
				meta: { title: '若兮角色权限详解', icon: 'form' }
			},
			{
				path: 'test',
				name: 'test',
				component: () => import('@/views/user/test'),
				meta: { title: '测试', icon: 'form' }
			}
		]
	},
	{
		path: '/blog',
		component: Layout,
		redirect: '/blog/index',
		name: 'blog',
		meta: { title: '博客管理', icon: 'education' },
		children: [
			{
				path: 'index',
				name: 'index',
				component: () => import('@/views/blog/index'),
				meta: { title: '博客列表', icon: 'edit' }
			},
			{
				path: 'access',
				name: 'access',
				component: () => import('@/views/blog/index'),
				meta: { title: '来访日志', icon: 'edit' }
			}
		]
	},
	{
		path: '/log',
		component: Layout,
		redirect: '/log/index',
		name: 'log',
		meta: { title: '日志管理', icon: 'edit' },
		children: [
			{
				path: 'index',
				name: 'index',
				component: () => import('@/views/log/index'),
				meta: { title: '基础日志', icon: 'edit' }
			},
			{
				path: 'access',
				name: 'access',
				component: () => import('@/views/log/access'),
				meta: { title: '来访日志', icon: 'edit' }
			}
		]
	},
	{
		path: '/form',
		component: Layout,
		children: [
			{
				path: 'index',
				name: 'Form',
				component: () => import('@/views/form/index'),
				meta: { title: '若兮微服务监测系统', icon: 'eye' }
			}
		]
	},
	{
		path: '/music',
		component: Layout,
		children: [
			{
				path: 'music',
				name: 'music',
				component: () => import('@/views/music/music'),
				meta: { title: '若兮音乐', icon: 'education' }
			}
		]
	},
	{
		path: '/about',
		component: Layout,
		children: [
			{
				path: 'index',
				name: 'about',
				component: () => import('@/views/about/index'),
				meta: { title: '关于若兮', icon: 'link' }
			}
		]
	},


  // 404 page must be placed at the end !!!
  { path: '*', redirect: '/404', hidden: true }
]

const createRouter = () => new Router({
  // mode: 'history', // require service support
  scrollBehavior: () => ({ y: 0 }),
  routes: constantRoutes
})

const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}

/**
 *  全局导航守卫,判断用户是否登陆
  	使用 router.beforeEach 注册一个全局前置守卫,查询session域中的
 		Token令牌,若令牌不存在,则重定向到登录页面
 */
router.beforeEach((to, from, next) => {
	if (to.path === '/login' || to.path === '/401' || to.path === '/404') {
		next();
	} else {
		let token = sessionStorage.getItem('accessToken');
		if (token === null || token === '' || token === undefined) {
			next('/login');
		} else {
			next();
		}
	}
});

export default router
